Q.

In Young’s double slit experiment, carried out with light of wavelength 5000 Å, the distance between the slits is 0.3 mm and the screen is at 200 cm from the slits. The central maximum is at x = 0 cm. The value of x for the third maxima is __________ mm.                      [2024]


Ans.

(10)            β=λDd=5×10-7×23×10-4=10×10-33 m

                  For 3rd maxima y3=3β=10×10-3 m=10 mm